OnChange monitors web pages and APIs, preserves before-and-after evidence, and alerts your team when something changes. Keep accessibility audits current and focus on the work that needs another look.
Connect audit evidence to the pages it covers. When your site changes, review affected or uncertain evidence and retain the checks proven unchanged. Human reviewers confirm the retest results.
Evidence reviewExample
A release changed the navigation.
Bring the affected evidence back into focus.
Baseline approvedYour signed-off evidence is saved.
Recorded
Navigation & focus orderReview the checks this change affects.
Retest
Verify and sign offKeep a clear record of the review.
OnChange monitors web pages, API responses, sitemaps, and robots.txt files on a schedule. It can detect edited copy, a redesigned section, a changed price, a removed CTA, a different API response, a new accessibility violation, a title tag or canonical URL update, a sitemap URL addition or removal, or a robots.txt rule change.
How often should I monitor important pages?
Use faster checks for revenue-critical pages, pricing, APIs, and launch pages. Daily or weekly checks are usually enough for evergreen content, legal pages, and documentation. OnChange supports intervals from 30 minutes on Free to 10 seconds on Enterprise.
Can OnChange monitor JavaScript websites, APIs, and specific page elements?
Yes. OnChange can monitor REST and JSON endpoints and use CSS selectors to watch a specific price, button, table, or content block. JavaScript rendering is available on paid plans, and you can ignore headers, ads, and other page elements that create noise.
Can I track accessibility regressions after a website update?
Yes. OnChange uses axe-core to track detectable accessibility issues between scans and links audit evidence to monitored pages. Changes can reopen affected or uncertain evidence for retesting. Automated scans cannot establish WCAG conformance on their own; manual and assistive-technology checks still require a reviewer.
Can I reduce noisy change alerts?
Yes. Target a specific element with CSS selectors, ignore headers or ads, mute volatile JSON paths or sections with regex masks, set a confidence threshold, or write a plain-English rule such as 'alert me when the Pro plan price drops below $50.'
How is website change monitoring different from uptime monitoring?
Uptime monitoring tells you whether a page responds. Website change monitoring tells you whether the page still says, shows, and returns the right thing. The two are complementary: a page can be online while its price, content, metadata, API payload, or accessibility state is wrong.
